Annotation of mandoc/argv.c, Revision 1.55
1.55 ! kristaps 1: /* $Id: argv.c,v 1.54 2009/03/21 09:42:07 kristaps Exp $ */
1.1 kristaps 2: /*
1.53 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
1.44 kristaps 19: #include <sys/types.h>
20:
1.1 kristaps 21: #include <assert.h>
22: #include <ctype.h>
23: #include <err.h>
24: #include <stdlib.h>
25: #include <stdio.h>
26: #include <string.h>
27:
28: #include "private.h"
29:
1.20 kristaps 30: /*
1.27 kristaps 31: * Routines to parse arguments of macros. Arguments follow the syntax
32: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
33: * arguments, multiple arguments per value, no-value arguments, etc.
1.39 kristaps 34: *
35: * There's no limit to the number or arguments that may be allocated.
1.20 kristaps 36: */
37:
1.24 kristaps 38: #define ARGS_QUOTED (1 << 0)
39: #define ARGS_DELIM (1 << 1)
40: #define ARGS_TABSEP (1 << 2)
1.38 kristaps 41: #define ARGS_ARGVLIKE (1 << 3)
1.15 kristaps 42:
1.36 kristaps 43: #define ARGV_NONE (1 << 0)
44: #define ARGV_SINGLE (1 << 1)
45: #define ARGV_MULTI (1 << 2)
46: #define ARGV_OPT_SINGLE (1 << 3)
47:
1.52 kristaps 48: #define MULTI_STEP 5
49:
1.39 kristaps 50: enum mwarn {
51: WQUOTPARM,
52: WARGVPARM,
53: WCOLEMPTY,
54: WTAILWS
55: };
56:
57: enum merr {
58: EQUOTTERM,
59: EARGVAL
60: };
61:
1.30 kristaps 62: static int argv_a2arg(int, const char *);
1.26 kristaps 63: static int args(struct mdoc *, int, int *,
64: char *, int, char **);
1.51 kristaps 65: static int argv(struct mdoc *, int,
1.39 kristaps 66: struct mdoc_argv *, int *, char *);
1.26 kristaps 67: static int argv_single(struct mdoc *, int,
1.39 kristaps 68: struct mdoc_argv *, int *, char *);
1.36 kristaps 69: static int argv_opt_single(struct mdoc *, int,
1.39 kristaps 70: struct mdoc_argv *, int *, char *);
1.26 kristaps 71: static int argv_multi(struct mdoc *, int,
1.39 kristaps 72: struct mdoc_argv *, int *, char *);
73: static int pwarn(struct mdoc *, int, int, enum mwarn);
74: static int perr(struct mdoc *, int, int, enum merr);
1.22 kristaps 75:
1.36 kristaps 76: /* Per-argument flags. */
77:
78: static int mdoc_argvflags[MDOC_ARG_MAX] = {
79: ARGV_NONE, /* MDOC_Split */
80: ARGV_NONE, /* MDOC_Nosplit */
81: ARGV_NONE, /* MDOC_Ragged */
82: ARGV_NONE, /* MDOC_Unfilled */
83: ARGV_NONE, /* MDOC_Literal */
84: ARGV_NONE, /* MDOC_File */
85: ARGV_SINGLE, /* MDOC_Offset */
86: ARGV_NONE, /* MDOC_Bullet */
87: ARGV_NONE, /* MDOC_Dash */
88: ARGV_NONE, /* MDOC_Hyphen */
89: ARGV_NONE, /* MDOC_Item */
90: ARGV_NONE, /* MDOC_Enum */
91: ARGV_NONE, /* MDOC_Tag */
92: ARGV_NONE, /* MDOC_Diag */
93: ARGV_NONE, /* MDOC_Hang */
94: ARGV_NONE, /* MDOC_Ohang */
95: ARGV_NONE, /* MDOC_Inset */
96: ARGV_MULTI, /* MDOC_Column */
97: ARGV_SINGLE, /* MDOC_Width */
98: ARGV_NONE, /* MDOC_Compact */
1.50 kristaps 99: ARGV_OPT_SINGLE, /* MDOC_Std */
1.36 kristaps 100: ARGV_NONE, /* MDOC_Filled */
101: ARGV_NONE, /* MDOC_Words */
102: ARGV_NONE, /* MDOC_Emphasis */
1.50 kristaps 103: ARGV_NONE, /* MDOC_Symbolic */
1.36 kristaps 104: ARGV_NONE /* MDOC_Symbolic */
105: };
106:
1.22 kristaps 107: static int mdoc_argflags[MDOC_MAX] = {
108: 0, /* \" */
109: 0, /* Dd */
110: 0, /* Dt */
111: 0, /* Os */
112: 0, /* Sh */
113: 0, /* Ss */
114: ARGS_DELIM, /* Pp */
115: ARGS_DELIM, /* D1 */
116: ARGS_DELIM, /* Dl */
117: 0, /* Bd */
118: 0, /* Ed */
119: 0, /* Bl */
120: 0, /* El */
1.32 kristaps 121: 0, /* It */
1.22 kristaps 122: ARGS_DELIM, /* Ad */
123: ARGS_DELIM, /* An */
124: ARGS_DELIM, /* Ar */
125: ARGS_QUOTED, /* Cd */
126: ARGS_DELIM, /* Cm */
127: ARGS_DELIM, /* Dv */
128: ARGS_DELIM, /* Er */
129: ARGS_DELIM, /* Ev */
130: 0, /* Ex */
131: ARGS_DELIM | ARGS_QUOTED, /* Fa */
132: 0, /* Fd */
133: ARGS_DELIM, /* Fl */
134: ARGS_DELIM | ARGS_QUOTED, /* Fn */
135: ARGS_DELIM | ARGS_QUOTED, /* Ft */
136: ARGS_DELIM, /* Ic */
137: 0, /* In */
138: ARGS_DELIM, /* Li */
139: 0, /* Nd */
140: ARGS_DELIM, /* Nm */
141: ARGS_DELIM, /* Op */
142: 0, /* Ot */
143: ARGS_DELIM, /* Pa */
144: 0, /* Rv */
1.38 kristaps 145: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
1.22 kristaps 146: ARGS_DELIM, /* Va */
147: ARGS_DELIM, /* Vt */
148: ARGS_DELIM, /* Xr */
149: ARGS_QUOTED, /* %A */
150: ARGS_QUOTED, /* %B */
151: ARGS_QUOTED, /* %D */
152: ARGS_QUOTED, /* %I */
153: ARGS_QUOTED, /* %J */
154: ARGS_QUOTED, /* %N */
155: ARGS_QUOTED, /* %O */
156: ARGS_QUOTED, /* %P */
157: ARGS_QUOTED, /* %R */
158: ARGS_QUOTED, /* %T */
159: ARGS_QUOTED, /* %V */
160: ARGS_DELIM, /* Ac */
161: 0, /* Ao */
162: ARGS_DELIM, /* Aq */
163: ARGS_DELIM, /* At */
164: ARGS_DELIM, /* Bc */
165: 0, /* Bf */
166: 0, /* Bo */
167: ARGS_DELIM, /* Bq */
168: ARGS_DELIM, /* Bsx */
169: ARGS_DELIM, /* Bx */
170: 0, /* Db */
171: ARGS_DELIM, /* Dc */
172: 0, /* Do */
173: ARGS_DELIM, /* Dq */
174: ARGS_DELIM, /* Ec */
175: 0, /* Ef */
176: ARGS_DELIM, /* Em */
177: 0, /* Eo */
178: ARGS_DELIM, /* Fx */
179: ARGS_DELIM, /* Ms */
180: ARGS_DELIM, /* No */
181: ARGS_DELIM, /* Ns */
182: ARGS_DELIM, /* Nx */
183: ARGS_DELIM, /* Ox */
184: ARGS_DELIM, /* Pc */
185: ARGS_DELIM, /* Pf */
186: 0, /* Po */
187: ARGS_DELIM, /* Pq */
188: ARGS_DELIM, /* Qc */
189: ARGS_DELIM, /* Ql */
190: 0, /* Qo */
191: ARGS_DELIM, /* Qq */
192: 0, /* Re */
193: 0, /* Rs */
194: ARGS_DELIM, /* Sc */
195: 0, /* So */
196: ARGS_DELIM, /* Sq */
197: 0, /* Sm */
198: ARGS_DELIM, /* Sx */
199: ARGS_DELIM, /* Sy */
200: ARGS_DELIM, /* Tn */
201: ARGS_DELIM, /* Ux */
202: ARGS_DELIM, /* Xc */
203: 0, /* Xo */
204: 0, /* Fo */
205: 0, /* Fc */
206: 0, /* Oo */
207: ARGS_DELIM, /* Oc */
208: 0, /* Bk */
209: 0, /* Ek */
210: 0, /* Bt */
211: 0, /* Hf */
212: 0, /* Fr */
213: 0, /* Ud */
1.38 kristaps 214: 0, /* Lb */
1.42 kristaps 215: 0, /* Ap */
1.45 kristaps 216: ARGS_DELIM, /* Lp */
217: ARGS_DELIM | ARGS_QUOTED, /* Lk */
218: ARGS_DELIM | ARGS_QUOTED, /* Mt */
1.48 kristaps 219: ARGS_DELIM, /* Brq */
220: 0, /* Bro */
221: ARGS_DELIM, /* Brc */
1.50 kristaps 222: ARGS_QUOTED, /* %C */
1.52 kristaps 223: 0, /* Es */
224: 0, /* En */
1.53 kristaps 225: 0, /* Dx */
1.54 kristaps 226: ARGS_QUOTED, /* %Q */
1.22 kristaps 227: };
228:
1.1 kristaps 229:
1.39 kristaps 230: /*
231: * Parse an argument from line text. This comes in the form of -key
232: * [value0...], which may either have a single mandatory value, at least
233: * one mandatory value, an optional single value, or no value.
234: */
235: int
236: mdoc_argv(struct mdoc *mdoc, int line, int tok,
237: struct mdoc_arg **v, int *pos, char *buf)
238: {
239: int i;
1.46 kristaps 240: char *p, sv;
1.39 kristaps 241: struct mdoc_argv tmp;
242: struct mdoc_arg *arg;
243:
244: if (0 == buf[*pos])
245: return(ARGV_EOLN);
246:
1.52 kristaps 247: assert(' ' != buf[*pos]);
1.39 kristaps 248:
1.52 kristaps 249: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
1.39 kristaps 250: return(ARGV_WORD);
251:
1.52 kristaps 252: /* Parse through to the first unescaped space. */
253:
1.39 kristaps 254: i = *pos;
255: p = &buf[++(*pos)];
256:
257: assert(*pos > 0);
258:
259: /* LINTED */
260: while (buf[*pos]) {
1.52 kristaps 261: if (' ' == buf[*pos])
1.39 kristaps 262: if ('\\' != buf[*pos - 1])
263: break;
264: (*pos)++;
265: }
266:
1.52 kristaps 267: /* XXX - save zeroed byte, if not an argument. */
1.46 kristaps 268:
1.47 kristaps 269: sv = 0;
1.46 kristaps 270: if (buf[*pos]) {
271: sv = buf[*pos];
1.39 kristaps 272: buf[(*pos)++] = 0;
1.46 kristaps 273: }
1.39 kristaps 274:
275: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
276: tmp.line = line;
277: tmp.pos = *pos;
278:
1.52 kristaps 279: /* See if our token accepts the argument. */
1.39 kristaps 280:
281: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
1.52 kristaps 282: /* XXX - restore saved zeroed byte. */
1.47 kristaps 283: if (sv)
284: buf[*pos - 1] = sv;
1.39 kristaps 285: if ( ! pwarn(mdoc, line, i, WARGVPARM))
286: return(ARGV_ERROR);
287: return(ARGV_WORD);
288: }
289:
1.52 kristaps 290: while (buf[*pos] && ' ' == buf[*pos])
1.39 kristaps 291: (*pos)++;
292:
1.51 kristaps 293: if ( ! argv(mdoc, line, &tmp, pos, buf))
1.39 kristaps 294: return(ARGV_ERROR);
295:
296: if (NULL == (arg = *v)) {
1.40 kristaps 297: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 298: arg = *v;
1.40 kristaps 299: }
1.39 kristaps 300:
301: arg->argc++;
302: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 303: sizeof(struct mdoc_argv));
1.39 kristaps 304:
305: (void)memcpy(&arg->argv[(int)arg->argc - 1],
306: &tmp, sizeof(struct mdoc_argv));
307:
308: return(ARGV_ARG);
309: }
310:
311:
312: void
313: mdoc_argv_free(struct mdoc_arg *p)
314: {
315: int i, j;
316:
1.41 kristaps 317: if (NULL == p)
318: return;
319:
1.40 kristaps 320: if (p->refcnt) {
321: --(p->refcnt);
322: if (p->refcnt)
323: return;
324: }
325:
326: assert(p->argc);
1.39 kristaps 327:
328: /* LINTED */
329: for (i = 0; i < (int)p->argc; i++) {
330: if (0 == p->argv[i].sz)
331: continue;
332: /* LINTED */
1.55 ! kristaps 333: for (j = 0; j < (int)p->argv[i].sz; j++)
1.39 kristaps 334: free(p->argv[i].value[j]);
1.40 kristaps 335:
1.39 kristaps 336: free(p->argv[i].value);
337: }
338:
1.40 kristaps 339: free(p->argv);
1.39 kristaps 340: free(p);
341: }
342:
343:
344:
1.24 kristaps 345: static int
1.39 kristaps 346: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 347: {
1.39 kristaps 348: char *p;
349:
350: p = NULL;
1.25 kristaps 351:
352: switch (code) {
353: case (EQUOTTERM):
1.39 kristaps 354: p = "unterminated quoted parameter";
1.25 kristaps 355: break;
356: case (EARGVAL):
1.39 kristaps 357: p = "argument requires a value";
1.25 kristaps 358: break;
359: }
1.39 kristaps 360:
361: assert(p);
362: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 363: }
364:
365:
366: static int
1.39 kristaps 367: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 368: {
1.39 kristaps 369: char *p;
1.24 kristaps 370: int c;
371:
1.39 kristaps 372: p = NULL;
373: c = WARN_SYNTAX;
374:
1.24 kristaps 375: switch (code) {
376: case (WQUOTPARM):
1.39 kristaps 377: p = "unexpected quoted parameter";
1.24 kristaps 378: break;
379: case (WARGVPARM):
1.39 kristaps 380: p = "argument-like parameter";
1.24 kristaps 381: break;
1.25 kristaps 382: case (WCOLEMPTY):
1.39 kristaps 383: p = "last list column is empty";
384: c = WARN_COMPAT;
1.25 kristaps 385: break;
386: case (WTAILWS):
1.39 kristaps 387: p = "trailing whitespace";
388: c = WARN_COMPAT;
1.25 kristaps 389: break;
1.24 kristaps 390: }
1.39 kristaps 391:
392: assert(p);
393: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 394: }
395:
396:
1.2 kristaps 397: int
1.22 kristaps 398: mdoc_args(struct mdoc *mdoc, int line,
399: int *pos, char *buf, int tok, char **v)
1.1 kristaps 400: {
1.26 kristaps 401: int fl, c, i;
1.22 kristaps 402: struct mdoc_node *n;
403:
1.24 kristaps 404: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
405:
406: /*
1.36 kristaps 407: * Override per-macro argument flags with context-specific ones.
408: * As of now, this is only valid for `It' depending on its list
409: * context.
1.24 kristaps 410: */
411:
1.36 kristaps 412: switch (tok) {
413: case (MDOC_It):
1.24 kristaps 414: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 415: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
416: break;
417:
1.24 kristaps 418: assert(n);
1.39 kristaps 419: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 420: assert(c > 0);
1.26 kristaps 421:
1.36 kristaps 422: /*
423: * Using `Bl -column' adds ARGS_TABSEP to the arguments
424: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
425: * for quoted arguments.
426: */
427:
1.26 kristaps 428: /* LINTED */
1.24 kristaps 429: for (i = 0; i < c; i++) {
1.39 kristaps 430: switch (n->args->argv[i].arg) {
1.35 kristaps 431: case (MDOC_Column):
432: fl |= ARGS_TABSEP;
433: fl &= ~ARGS_DELIM;
434: i = c;
435: break;
436: case (MDOC_Diag):
437: fl |= ARGS_QUOTED;
438: i = c;
439: break;
440: default:
441: break;
442: }
1.24 kristaps 443: }
1.39 kristaps 444: break;
1.36 kristaps 445: default:
446: break;
1.24 kristaps 447: }
448:
1.26 kristaps 449: return(args(mdoc, line, pos, buf, fl, v));
450: }
451:
452:
453: static int
454: args(struct mdoc *mdoc, int line,
455: int *pos, char *buf, int fl, char **v)
456: {
1.31 kristaps 457: int i;
1.26 kristaps 458: char *p, *pp;
459:
460: assert(*pos > 0);
461:
462: if (0 == buf[*pos])
463: return(ARGS_EOLN);
464:
465: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
466: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
467: return(ARGS_ERROR);
468:
1.38 kristaps 469: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 470: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
471: return(ARGS_ERROR);
472:
1.24 kristaps 473: /*
474: * If the first character is a delimiter and we're to look for
475: * delimited strings, then pass down the buffer seeing if it
476: * follows the pattern of [[::delim::][ ]+]+.
477: */
478:
1.2 kristaps 479: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 480: for (i = *pos; buf[i]; ) {
481: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 482: break;
483: i++;
1.34 kristaps 484: /* There must be at least one space... */
1.52 kristaps 485: if (0 == buf[i] || ' ' != buf[i])
1.34 kristaps 486: break;
487: i++;
1.52 kristaps 488: while (buf[i] && ' ' == buf[i])
1.2 kristaps 489: i++;
490: }
491: if (0 == buf[i]) {
492: *v = &buf[*pos];
493: return(ARGS_PUNCT);
494: }
495: }
496:
1.24 kristaps 497: /* First parse non-quoted strings. */
1.1 kristaps 498:
1.17 kristaps 499: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 500: *v = &buf[*pos];
501:
1.24 kristaps 502: /*
503: * Thar be dragons here! If we're tab-separated, search
1.52 kristaps 504: * ahead for either a tab or the `Ta' macro.
505: * If a `Ta' is detected, it must be space-buffered before and
506: * after. If either of these hold true, then prune out the
1.24 kristaps 507: * extra spaces and call it an argument.
508: */
509:
510: if (ARGS_TABSEP & fl) {
511: /* Scan ahead to unescaped tab. */
1.12 kristaps 512:
1.52 kristaps 513: p = strchr(*v, '\t');
1.24 kristaps 514:
515: /* Scan ahead to unescaped `Ta'. */
516:
517: for (pp = *v; ; pp++) {
518: if (NULL == (pp = strstr(pp, "Ta")))
519: break;
520: if (pp > *v && ' ' != *(pp - 1))
521: continue;
522: if (' ' == *(pp + 2) || 0 == *(pp + 2))
523: break;
524: }
525:
526: /* Choose delimiter tab/Ta. */
527:
528: if (p && pp)
529: p = (p < pp ? p : pp);
530: else if ( ! p && pp)
531: p = pp;
532:
533: /* Strip delimiter's preceding whitespace. */
534:
535: if (p && p > *v) {
536: pp = p - 1;
537: while (pp > *v && ' ' == *pp)
538: pp--;
539: if (pp == *v && ' ' == *pp)
540: *pp = 0;
541: else if (' ' == *pp)
542: *(pp + 1) = 0;
543: }
544:
545: /* ...in- and proceding whitespace. */
546:
547: if (p && ('\t' != *p)) {
548: *p++ = 0;
549: *p++ = 0;
550: } else if (p)
551: *p++ = 0;
552:
553: if (p) {
554: while (' ' == *p)
555: p++;
556: if (0 != *p)
557: *(p - 1) = 0;
1.33 kristaps 558: *pos += (int)(p - *v);
1.24 kristaps 559: }
560:
1.25 kristaps 561: if (p && 0 == *p)
562: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
563: return(0);
564: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
565: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
566: return(0);
567:
1.26 kristaps 568: if (p)
1.49 kristaps 569: return(ARGS_PHRASE);
1.26 kristaps 570:
1.24 kristaps 571: /* Configure the eoln case, too. */
572:
1.26 kristaps 573: p = strchr(*v, 0);
574: assert(p);
575:
576: if (p > *v && ' ' == *(p - 1))
577: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
578: return(0);
1.33 kristaps 579: *pos += (int)(p - *v);
1.24 kristaps 580:
1.49 kristaps 581: return(ARGS_PHRASE);
1.24 kristaps 582: }
1.46 kristaps 583:
1.24 kristaps 584: /* Do non-tabsep look-ahead here. */
585:
586: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 587: while (buf[*pos]) {
1.52 kristaps 588: if (' ' == buf[*pos])
1.17 kristaps 589: if ('\\' != buf[*pos - 1])
590: break;
1.12 kristaps 591: (*pos)++;
1.17 kristaps 592: }
1.1 kristaps 593:
594: if (0 == buf[*pos])
1.2 kristaps 595: return(ARGS_WORD);
1.1 kristaps 596:
597: buf[(*pos)++] = 0;
1.12 kristaps 598:
1.1 kristaps 599: if (0 == buf[*pos])
1.2 kristaps 600: return(ARGS_WORD);
1.1 kristaps 601:
1.12 kristaps 602: if ( ! (ARGS_TABSEP & fl))
1.52 kristaps 603: while (buf[*pos] && ' ' == buf[*pos])
1.12 kristaps 604: (*pos)++;
1.1 kristaps 605:
606: if (buf[*pos])
1.2 kristaps 607: return(ARGS_WORD);
1.1 kristaps 608:
1.25 kristaps 609: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 610: return(ARGS_ERROR);
1.1 kristaps 611:
1.2 kristaps 612: return(ARGS_WORD);
613: }
614:
615: /*
616: * If we're a quoted string (and quoted strings are allowed),
617: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 618: * error. After, parse to the next word.
1.2 kristaps 619: */
1.1 kristaps 620:
621: *v = &buf[++(*pos)];
622:
623: while (buf[*pos] && '\"' != buf[*pos])
624: (*pos)++;
625:
626: if (0 == buf[*pos]) {
1.25 kristaps 627: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 628: return(ARGS_ERROR);
1.1 kristaps 629: }
630:
631: buf[(*pos)++] = 0;
632: if (0 == buf[*pos])
1.19 kristaps 633: return(ARGS_QWORD);
1.1 kristaps 634:
1.52 kristaps 635: while (buf[*pos] && ' ' == buf[*pos])
1.1 kristaps 636: (*pos)++;
637:
638: if (buf[*pos])
1.19 kristaps 639: return(ARGS_QWORD);
1.1 kristaps 640:
1.25 kristaps 641: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 642: return(ARGS_ERROR);
643:
1.19 kristaps 644: return(ARGS_QWORD);
1.1 kristaps 645: }
646:
647:
1.2 kristaps 648: static int
1.30 kristaps 649: argv_a2arg(int tok, const char *argv)
1.1 kristaps 650: {
651:
1.36 kristaps 652: /*
653: * Parse an argument identifier from its text. XXX - this
654: * should really be table-driven to clarify the code.
655: *
656: * If you add an argument to the list, make sure that you
657: * register it here with its one or more macros!
658: */
659:
1.1 kristaps 660: switch (tok) {
1.6 kristaps 661: case (MDOC_An):
662: if (xstrcmp(argv, "split"))
663: return(MDOC_Split);
664: else if (xstrcmp(argv, "nosplit"))
665: return(MDOC_Nosplit);
666: break;
667:
1.2 kristaps 668: case (MDOC_Bd):
1.1 kristaps 669: if (xstrcmp(argv, "ragged"))
670: return(MDOC_Ragged);
671: else if (xstrcmp(argv, "unfilled"))
672: return(MDOC_Unfilled);
1.13 kristaps 673: else if (xstrcmp(argv, "filled"))
674: return(MDOC_Filled);
1.1 kristaps 675: else if (xstrcmp(argv, "literal"))
676: return(MDOC_Literal);
677: else if (xstrcmp(argv, "file"))
678: return(MDOC_File);
679: else if (xstrcmp(argv, "offset"))
680: return(MDOC_Offset);
1.49 kristaps 681: else if (xstrcmp(argv, "compact"))
682: return(MDOC_Compact);
1.2 kristaps 683: break;
684:
1.8 kristaps 685: case (MDOC_Bf):
686: if (xstrcmp(argv, "emphasis"))
687: return(MDOC_Emphasis);
688: else if (xstrcmp(argv, "literal"))
689: return(MDOC_Literal);
690: else if (xstrcmp(argv, "symbolic"))
691: return(MDOC_Symbolic);
692: break;
693:
1.7 kristaps 694: case (MDOC_Bk):
695: if (xstrcmp(argv, "words"))
696: return(MDOC_Words);
697: break;
698:
1.2 kristaps 699: case (MDOC_Bl):
700: if (xstrcmp(argv, "bullet"))
1.1 kristaps 701: return(MDOC_Bullet);
702: else if (xstrcmp(argv, "dash"))
703: return(MDOC_Dash);
704: else if (xstrcmp(argv, "hyphen"))
705: return(MDOC_Hyphen);
706: else if (xstrcmp(argv, "item"))
707: return(MDOC_Item);
708: else if (xstrcmp(argv, "enum"))
709: return(MDOC_Enum);
710: else if (xstrcmp(argv, "tag"))
711: return(MDOC_Tag);
712: else if (xstrcmp(argv, "diag"))
713: return(MDOC_Diag);
714: else if (xstrcmp(argv, "hang"))
715: return(MDOC_Hang);
716: else if (xstrcmp(argv, "ohang"))
717: return(MDOC_Ohang);
718: else if (xstrcmp(argv, "inset"))
719: return(MDOC_Inset);
720: else if (xstrcmp(argv, "column"))
721: return(MDOC_Column);
722: else if (xstrcmp(argv, "width"))
723: return(MDOC_Width);
1.2 kristaps 724: else if (xstrcmp(argv, "offset"))
725: return(MDOC_Offset);
1.1 kristaps 726: else if (xstrcmp(argv, "compact"))
727: return(MDOC_Compact);
1.50 kristaps 728: else if (xstrcmp(argv, "nested"))
729: return(MDOC_Nested);
1.2 kristaps 730: break;
1.3 kristaps 731:
732: case (MDOC_Rv):
733: /* FALLTHROUGH */
734: case (MDOC_Ex):
735: if (xstrcmp(argv, "std"))
736: return(MDOC_Std);
737: break;
1.1 kristaps 738: default:
1.8 kristaps 739: break;
1.1 kristaps 740: }
741:
742: return(MDOC_ARG_MAX);
743: }
744:
745:
1.2 kristaps 746: static int
1.26 kristaps 747: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 748: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 749: {
750: int c, ppos;
751: char *p;
752:
753: ppos = *pos;
754:
1.39 kristaps 755: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 756: if ('-' == buf[*pos])
757: break;
1.26 kristaps 758: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 759: if (ARGS_ERROR == c)
1.12 kristaps 760: return(0);
1.39 kristaps 761: else if (ARGS_EOLN == c)
1.12 kristaps 762: break;
1.39 kristaps 763:
1.52 kristaps 764: if (0 == v->sz % MULTI_STEP)
1.39 kristaps 765: v->value = xrealloc(v->value,
1.52 kristaps 766: (v->sz + MULTI_STEP) * sizeof(char *));
1.39 kristaps 767:
1.40 kristaps 768: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 769: }
770:
1.39 kristaps 771: if (v->sz)
1.12 kristaps 772: return(1);
773:
1.39 kristaps 774: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 775: }
776:
777:
778: static int
1.36 kristaps 779: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 780: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 781: {
1.39 kristaps 782: int c;
1.36 kristaps 783: char *p;
784:
785: if ('-' == buf[*pos])
786: return(1);
787:
788: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
789: if (ARGS_ERROR == c)
790: return(0);
791: if (ARGS_EOLN == c)
792: return(1);
793:
794: v->sz = 1;
795: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 796: v->value[0] = xstrdup(p);
1.36 kristaps 797: return(1);
798: }
799:
800:
801: /*
802: * Parse a single, mandatory value from the stream.
803: */
804: static int
1.26 kristaps 805: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 806: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 807: {
1.12 kristaps 808: int c, ppos;
1.1 kristaps 809: char *p;
810:
811: ppos = *pos;
812:
1.26 kristaps 813: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 814: if (ARGS_ERROR == c)
815: return(0);
816: if (ARGS_EOLN == c)
1.36 kristaps 817: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 818:
819: v->sz = 1;
820: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 821: v->value[0] = xstrdup(p);
1.12 kristaps 822: return(1);
823: }
824:
825:
1.36 kristaps 826: /*
827: * Determine rules for parsing arguments. Arguments can either accept
828: * no parameters, an optional single parameter, one parameter, or
829: * multiple parameters.
830: */
1.12 kristaps 831: static int
1.51 kristaps 832: argv(struct mdoc *mdoc, int line,
1.39 kristaps 833: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 834: {
835:
836: v->sz = 0;
837: v->value = NULL;
838:
1.50 kristaps 839: switch (mdoc_argvflags[v->arg]) {
1.36 kristaps 840: case (ARGV_SINGLE):
1.26 kristaps 841: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 842: case (ARGV_MULTI):
1.26 kristaps 843: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 844: case (ARGV_OPT_SINGLE):
845: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 846: default:
1.36 kristaps 847: /* ARGV_NONE */
1.6 kristaps 848: break;
1.1 kristaps 849: }
850:
851: return(1);
852: }
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